Platinum-group element mineralization in the Jijal layered ultramafic-mafic complex, Pakistani Himalayas

Miller, D.J.; Loucks, Robert R.; Ashraf, M. Waqar

doi:10.2113/gsecongeo.86.5.1093

Cited by 63 publications

(35 citation statements)

References 13 publications

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“…The whole Jijal section is commonly considered as the cumulitic lower part of the arc igneous sequence (Jagoutz, 2010;Jagoutz and Schmidt, 2012;Jagoutz et al, 2011;Khan et al, 1993). However, Miller et al (1991) suggested the origin of the ultramafic sequence in the uppermost arc mantle, which was further confirmed by Burg et al (1998), Dhuime et al (2007), and Garrido et al (2007) on the basis of field, geochronological, and geochemical evidence. Radiogenic isotopes, in particular, indicate that the ultramafic sequence is genetically unrelated to -and significantly older than -the overlying arc crust Garrido et al, 2007).…”

Section: Subarc Mantle (Kohistan)mentioning

confidence: 96%

Orogenic, Ophiolitic, and Abyssal Peridotites

Bodinier

Godard

2014

Treatise on Geochemistry

194

148

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Section: Subarc Mantle (Kohistan)mentioning

confidence: 96%

Orogenic, Ophiolitic, and Abyssal Peridotites

Bodinier

Godard

2014

Treatise on Geochemistry

194

148

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“…CDI indices for heavy metal in the study area were found in the order of Zn > Cu > Mn > Pb > Cr > Ni > Cd > Co (Said et al, 2011). In drinking water, the high CDI values of Zn, Mn and Pb may be attributed to the Pb-Zn sulfide mineralization, while that of Cr and Ni may have resulted from the mafic and ultramafic bed rocks hosting chromite deposits (Miller et al, 1991;Ashraf and Hussian, 1982).…”

Section: Analysis Of Exposures In Samplesmentioning

confidence: 99%

Health risk assessment of heavy metals in water, air, soil and fish

Koki¹,

Bayero²,

Umar³

et al. 2015

Afr. J. Pure Appl. Chem.

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The study and application of health risk assessment techniques are crucial in order to understand the risk of exposure to heavy metals and other harmful pollutants. It entails evaluating the risks of exposure at various concentrations and with reference to certain standard values approved by World Health Organization (WHO) and United States Environmental Protection Agency (USEPA). Investigation of water contamination with heavy metals has become the prime focus of environmental scientists in recent years. Effluent discharges into aquatic system affect living organisms within the receiving environment. The concentrations of these metals were mostly assessed at 50th, 75th and 95th percentile and various exposure evaluated. This review covers studies in water, air, soil and fish samples. Air risks assessment was not given the needed attention and children were more susceptible to the hazard than adult, especially lead toxicity, resulting in health complications. Heavy metals bio accumulates over time, and lethal upon exposure at low concentrations. This review will assist risk managers to minimize the exposure at optimum level as well as for the government to formulate policies in safe guarding the health of population.

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“…Additional abbreviations are: c-conodont age; d-conformable contact; u-unconformity; ?-uncertain contact or stratigraphic age. Jan, 1979a;Miller et al, 1991;Yamamoto, 1993) and on unpublished Geological Survey of Pakistan maps.…”

Section: Kohistan Arcmentioning

confidence: 99%

Geologic map of the Indus syntaxis and surrounding area, northwest Himalaya, Pakistan

DiPietro¹,

Pogue²,

Hussain³

et al. 1999

Himalaya and Tibet: Mountain Roots to Mountain Tops

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The stratigraphy, structure, and metamorphism of the hinterland area of the Indian plate in northwestern Pakistan is described in relation to a geologic map. We conclude that this is one of the few areas in the Himalaya where amphibolite facies rock can be traced southward from the Indus-Tsangpo suture zone to low-grade fossiliferous rock without crossing a major fault. The absence of a major fault provides an opportunity to constrain the depositional ages of the metamorphic stratigraphy by direct correlation with fossiliferous rock in conjunction with isotopic dating of intrusive rock. The stratigraphy is divided into the following age groups, each bounded by an unconformity: Early Proterozoic, Late Proterozoic; early-middle Paleozoic, late Paleozoic-Triassic, and Mesozoic. Within this stratigraphy there is evidence for plutonism in the Early Proterozoic, Late Proterozoic, early Paleozoic, late Paleozoic, and Cenozoic; deformation in the Early Proterozoic and late Paleozoic; and volcanism in the late Paleozoic-Triassic. All of the rocks record deformation and greenschist to amphibolite facies metamorphism in the Late Cretaceous-Cenozoic as a result of the obduction of Indus melange onto the Indian plate along the Main Mantle thrust and the ensuing collision, thrusting, and final emplacement of the Kohistan arc complex along the Kohistan fault.The Main Mantle thrust is a premetamorphic or synmetamorphic fault that dates the time of obduction as pre-late Eocene and possibly as early as Late Cretaceous. Obduction along the Main Mantle thrust is associated with west-southwest-vergent folds on the Indian plate. Exhumation and cooling of the Indian plate following peak metamorphism may have begun by the late Paleocene or early Eocene in the Indus syntaxis, and by the middle Eocene in the Loe Sar dome. Cooling and exhumation are associated with the development of large-scale, north-south-trending folds that fold the Main Mantle thrust. The time of initial collision of Kohistan with the Indian plate is unconstrained in the field area, but brittle-ductile fabrics along the Kohistan fault indi-

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Platinum-group element mineralization in the Jijal layered ultramafic-mafic complex, Pakistani Himalayas

Cited by 63 publications

References 13 publications

Orogenic, Ophiolitic, and Abyssal Peridotites

Orogenic, Ophiolitic, and Abyssal Peridotites

Health risk assessment of heavy metals in water, air, soil and fish

Geologic map of the Indus syntaxis and surrounding area, northwest Himalaya, Pakistan

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